2 * National Semiconductor DP83820
3 * 10/100/1000 Mb/s Ethernet Network Interface Controller
5 * Driver assumes little-endian and 32-bit host throughout.
8 #include "../port/lib.h"
13 #include "../port/error.h"
14 #include "../port/netif.h"
19 enum { /* Registers */
20 Cr = 0x00, /* Command */
21 Cfg = 0x04, /* Configuration and Media Status */
22 Mear = 0x08, /* MII/EEPROM Access */
23 Ptscr = 0x0C, /* PCI Test Control */
24 Isr = 0x10, /* Interrupt Status */
25 Imr = 0x14, /* Interrupt Mask */
26 Ier = 0x18, /* Interrupt Enable */
27 Ihr = 0x1C, /* Interrupt Holdoff */
28 Txdp = 0x20, /* Transmit Descriptor Pointer */
29 Txdphi = 0x24, /* Transmit Descriptor Pointer Hi */
30 Txcfg = 0x28, /* Transmit Configuration */
31 Gpior = 0x2C, /* General Purpose I/O Control */
32 Rxdp = 0x30, /* Receive Descriptor Pointer */
33 Rxdphi = 0x34, /* Receive Descriptor Pointer Hi */
34 Rxcfg = 0x38, /* Receive Configuration */
35 Pqcr = 0x3C, /* Priority Queueing Control */
36 Wcsr = 0x40, /* Wake on LAN Control/Status */
37 Pcr = 0x44, /* Pause Control/Status */
38 Rfcr = 0x48, /* Receive Filter/Match Control */
39 Rfdr = 0x4C, /* Receive Filter/Match Data */
40 Brar = 0x50, /* Boot ROM Address */
41 Brdr = 0x54, /* Boot ROM Data */
42 Srr = 0x58, /* Silicon Revision */
43 Mibc = 0x5C, /* MIB Control */
44 Mibd = 0x60, /* MIB Data */
45 Txdp1 = 0xA0, /* Txdp Priority 1 */
46 Txdp2 = 0xA4, /* Txdp Priority 2 */
47 Txdp3 = 0xA8, /* Txdp Priority 3 */
48 Rxdp1 = 0xB0, /* Rxdp Priority 1 */
49 Rxdp2 = 0xB4, /* Rxdp Priority 2 */
50 Rxdp3 = 0xB8, /* Rxdp Priority 3 */
51 Vrcr = 0xBC, /* VLAN/IP Receive Control */
52 Vtcr = 0xC0, /* VLAN/IP Transmit Control */
53 Vdr = 0xC4, /* VLAN Data */
54 Ccsr = 0xCC, /* Clockrun Control/Status */
55 Tbicr = 0xE0, /* TBI Control */
56 Tbisr = 0xE4, /* TBI Status */
57 Tanar = 0xE8, /* TBI ANAR */
58 Tanlpar = 0xEC, /* TBI ANLPAR */
59 Taner = 0xF0, /* TBI ANER */
60 Tesr = 0xF4, /* TBI ESR */
64 Txe = 0x00000001, /* Transmit Enable */
65 Txd = 0x00000002, /* Transmit Disable */
66 Rxe = 0x00000004, /* Receiver Enable */
67 Rxd = 0x00000008, /* Receiver Disable */
68 Txr = 0x00000010, /* Transmitter Reset */
69 Rxr = 0x00000020, /* Receiver Reset */
70 Swien = 0x00000080, /* Software Interrupt Enable */
71 Rst = 0x00000100, /* Reset */
72 TxpriSHFT = 9, /* Tx Priority Queue Select */
73 TxpriMASK = 0x00001E00,
74 RxpriSHFT = 13, /* Rx Priority Queue Select */
75 RxpriMASK = 0x0001E000,
78 enum { /* Configuration and Media Status */
79 Bem = 0x00000001, /* Big Endian Mode */
80 Ext125 = 0x00000002, /* External 125MHz reference Select */
81 Bromdis = 0x00000004, /* Disable Boot ROM interface */
82 Pesel = 0x00000008, /* Parity Error Detection Action */
83 Exd = 0x00000010, /* Excessive Deferral Abort */
84 Pow = 0x00000020, /* Program Out of Window Timer */
85 Sb = 0x00000040, /* Single Back-off */
86 Reqalg = 0x00000080, /* PCI Bus Request Algorithm */
87 Extstsen = 0x00000100, /* Extended Status Enable */
88 Phydis = 0x00000200, /* Disable PHY */
89 Phyrst = 0x00000400, /* Reset PHY */
90 M64addren = 0x00000800, /* Master 64-bit Addressing Enable */
91 Data64en = 0x00001000, /* 64-bit Data Enable */
92 Pci64det = 0x00002000, /* PCI 64-bit Bus Detected */
93 T64addren = 0x00004000, /* Target 64-bit Addressing Enable */
94 Mwidis = 0x00008000, /* MWI Disable */
95 Mrmdis = 0x00010000, /* MRM Disable */
96 Tmrtest = 0x00020000, /* Timer Test Mode */
97 Spdstsien = 0x00040000, /* PHY Spdsts Interrupt Enable */
98 Lnkstsien = 0x00080000, /* PHY Lnksts Interrupt Enable */
99 Dupstsien = 0x00100000, /* PHY Dupsts Interrupt Enable */
100 Mode1000 = 0x00400000, /* 1000Mb/s Mode Control */
101 Tbien = 0x01000000, /* Ten-Bit Interface Enable */
102 Dupsts = 0x10000000, /* Full Duplex Status */
103 Spdsts100 = 0x20000000, /* SPEED100 Input Pin Status */
104 Spdsts1000 = 0x40000000, /* SPEED1000 Input Pin Status */
105 Lnksts = 0x80000000, /* Link Status */
108 enum { /* MII/EEPROM Access */
109 Eedi = 0x00000001, /* EEPROM Data In */
110 Eedo = 0x00000002, /* EEPROM Data Out */
111 Eeclk = 0x00000004, /* EEPROM Serial Clock */
112 Eesel = 0x00000008, /* EEPROM Chip Select */
113 Mdio = 0x00000010, /* MII Management Data */
114 Mddir = 0x00000020, /* MII Management Direction */
115 Mdc = 0x00000040, /* MII Management Clock */
118 enum { /* Interrupts */
119 Rxok = 0x00000001, /* Rx OK */
120 Rxdesc = 0x00000002, /* Rx Descriptor */
121 Rxerr = 0x00000004, /* Rx Packet Error */
122 Rxearly = 0x00000008, /* Rx Early Threshold */
123 Rxidle = 0x00000010, /* Rx Idle */
124 Rxorn = 0x00000020, /* Rx Overrun */
125 Txok = 0x00000040, /* Tx Packet OK */
126 Txdesc = 0x00000080, /* Tx Descriptor */
127 Txerr = 0x00000100, /* Tx Packet Error */
128 Txidle = 0x00000200, /* Tx Idle */
129 Txurn = 0x00000400, /* Tx Underrun */
130 Mib = 0x00000800, /* MIB Service */
131 Swi = 0x00001000, /* Software Interrupt */
132 Pme = 0x00002000, /* Power Management Event */
133 Phy = 0x00004000, /* PHY Interrupt */
134 Hibint = 0x00008000, /* High Bits Interrupt Set */
135 Rxsovr = 0x00010000, /* Rx Status FIFO Overrun */
136 Rtabt = 0x00020000, /* Received Target Abort */
137 Rmabt = 0x00040000, /* Received Master Abort */
138 Sserr = 0x00080000, /* Signalled System Error */
139 Dperr = 0x00100000, /* Detected Parity Error */
140 Rxrcmp = 0x00200000, /* Receive Reset Complete */
141 Txrcmp = 0x00400000, /* Transmit Reset Complete */
142 Rxdesc0 = 0x00800000, /* Rx Descriptor for Priority Queue 0 */
143 Rxdesc1 = 0x01000000, /* Rx Descriptor for Priority Queue 1 */
144 Rxdesc2 = 0x02000000, /* Rx Descriptor for Priority Queue 2 */
145 Rxdesc3 = 0x04000000, /* Rx Descriptor for Priority Queue 3 */
146 Txdesc0 = 0x08000000, /* Tx Descriptor for Priority Queue 0 */
147 Txdesc1 = 0x10000000, /* Tx Descriptor for Priority Queue 1 */
148 Txdesc2 = 0x20000000, /* Tx Descriptor for Priority Queue 2 */
149 Txdesc3 = 0x40000000, /* Tx Descriptor for Priority Queue 3 */
152 enum { /* Interrupt Enable */
153 Ien = 0x00000001, /* Interrupt Enable */
156 enum { /* Interrupt Holdoff */
157 IhSHFT = 0, /* Interrupt Holdoff */
159 Ihctl = 0x00000100, /* Interrupt Holdoff Control */
162 enum { /* Transmit Configuration */
163 TxdrthSHFT = 0, /* Tx Drain Threshold */
164 TxdrthMASK = 0x000000FF,
165 FlthSHFT = 16, /* Tx Fill Threshold */
166 FlthMASK = 0x0000FF00,
167 Brstdis = 0x00080000, /* 1000Mb/s Burst Disable */
168 MxdmaSHFT = 20, /* Max Size per Tx DMA Burst */
169 MxdmaMASK = 0x00700000,
170 Ecretryen = 0x00800000, /* Excessive Collision Retry Enable */
171 Atp = 0x10000000, /* Automatic Transmit Padding */
172 Mlb = 0x20000000, /* MAC Loopback */
173 Hbi = 0x40000000, /* Heartbeat Ignore */
174 Csi = 0x80000000, /* Carrier Sense Ignore */
177 enum { /* Receive Configuration */
178 RxdrthSHFT = 1, /* Rx Drain Threshold */
179 RxdrthMASK = 0x0000003E,
180 Airl = 0x04000000, /* Accept In-Range Length Errored */
181 Alp = 0x08000000, /* Accept Long Packets */
182 Rxfd = 0x10000000, /* Receive Full Duplex */
183 Stripcrc = 0x20000000, /* Strip CRC */
184 Arp = 0x40000000, /* Accept Runt Packets */
185 Aep = 0x80000000, /* Accept Errored Packets */
188 enum { /* Priority Queueing Control */
189 Txpqen = 0x00000001, /* Transmit Priority Queuing Enable */
190 Txfairen = 0x00000002, /* Transmit Fairness Enable */
191 RxpqenSHFT = 2, /* Receive Priority Queue Enable */
192 RxpqenMASK = 0x0000000C,
195 enum { /* Pause Control/Status */
196 PscntSHFT = 0, /* Pause Counter Value */
197 PscntMASK = 0x0000FFFF,
198 Pstx = 0x00020000, /* Transmit Pause Frame */
199 PsffloSHFT = 18, /* Rx Data FIFO Lo Threshold */
200 PsffloMASK = 0x000C0000,
201 PsffhiSHFT = 20, /* Rx Data FIFO Hi Threshold */
202 PsffhiMASK = 0x00300000,
203 PsstloSHFT = 22, /* Rx Stat FIFO Hi Threshold */
204 PsstloMASK = 0x00C00000,
205 PssthiSHFT = 24, /* Rx Stat FIFO Hi Threshold */
206 PssthiMASK = 0x03000000,
207 Psrcvd = 0x08000000, /* Pause Frame Received */
208 Psact = 0x10000000, /* Pause Active */
209 Psda = 0x20000000, /* Pause on Destination Address */
210 Psmcast = 0x40000000, /* Pause on Multicast */
211 Psen = 0x80000000, /* Pause Enable */
214 enum { /* Receive Filter/Match Control */
215 RfaddrSHFT = 0, /* Extended Register Address */
216 RfaddrMASK = 0x000003FF,
217 Ulm = 0x00080000, /* U/L bit mask */
218 Uhen = 0x00100000, /* Unicast Hash Enable */
219 Mhen = 0x00200000, /* Multicast Hash Enable */
220 Aarp = 0x00400000, /* Accept ARP Packets */
221 ApatSHFT = 23, /* Accept on Pattern Match */
222 ApatMASK = 0x07800000,
223 Apm = 0x08000000, /* Accept on Perfect Match */
224 Aau = 0x10000000, /* Accept All Unicast */
225 Aam = 0x20000000, /* Accept All Multicast */
226 Aab = 0x40000000, /* Accept All Broadcast */
227 Rfen = 0x80000000, /* Rx Filter Enable */
230 enum { /* Receive Filter/Match Data */
231 RfdataSHFT = 0, /* Receive Filter Data */
232 RfdataMASK = 0x0000FFFF,
233 BmaskSHFT = 16, /* Byte Mask */
234 BmaskMASK = 0x00030000,
237 enum { /* MIB Control */
238 Wrn = 0x00000001, /* Warning Test Indicator */
239 Frz = 0x00000002, /* Freeze All Counters */
240 Aclr = 0x00000004, /* Clear All Counters */
241 Mibs = 0x00000008, /* MIB Counter Strobe */
244 enum { /* MIB Data */
245 Nmibd = 11, /* Number of MIB Data Registers */
248 enum { /* VLAN/IP Receive Control */
249 Vtden = 0x00000001, /* VLAN Tag Detection Enable */
250 Vtren = 0x00000002, /* VLAN Tag Removal Enable */
251 Dvtf = 0x00000004, /* Discard VLAN Tagged Frames */
252 Dutf = 0x00000008, /* Discard Untagged Frames */
253 Ipen = 0x00000010, /* IP Checksum Enable */
254 Ripe = 0x00000020, /* Reject IP Checksum Errors */
255 Rtcpe = 0x00000040, /* Reject TCP Checksum Errors */
256 Rudpe = 0x00000080, /* Reject UDP Checksum Errors */
259 enum { /* VLAN/IP Transmit Control */
260 Vgti = 0x00000001, /* VLAN Global Tag Insertion */
261 Vppti = 0x00000002, /* VLAN Per-Packet Tag Insertion */
262 Gchk = 0x00000004, /* Global Checksum Generation */
263 Ppchk = 0x00000008, /* Per-Packet Checksum Generation */
266 enum { /* VLAN Data */
267 VtypeSHFT = 0, /* VLAN Type Field */
268 VtypeMASK = 0x0000FFFF,
269 VtciSHFT = 16, /* VLAN Tag Control Information */
270 VtciMASK = 0xFFFF0000,
273 enum { /* Clockrun Control/Status */
274 Clkrunen = 0x00000001, /* CLKRUN Enable */
275 Pmeen = 0x00000100, /* PME Enable */
276 Pmests = 0x00008000, /* PME Status */
280 u32int link; /* Link to the next descriptor */
281 u32int bufptr; /* pointer to data Buffer */
282 int cmdsts; /* Command/Status */
283 int extsts; /* optional Extended Status */
285 Block* bp; /* Block containing bufptr */
286 u32int unused; /* pad to 64-bit */
289 enum { /* Common cmdsts bits */
290 SizeMASK = 0x0000FFFF, /* Descriptor Byte Count */
292 Ok = 0x08000000, /* Packet OK */
293 Crc = 0x10000000, /* Suppress/Include CRC */
294 Intr = 0x20000000, /* Interrupt on ownership transfer */
295 More = 0x40000000, /* not last descriptor in a packet */
296 Own = 0x80000000, /* Descriptor Ownership */
299 enum { /* Transmit cmdsts bits */
300 CcntMASK = 0x000F0000, /* Collision Count */
302 Ec = 0x00100000, /* Excessive Collisions */
303 Owc = 0x00200000, /* Out of Window Collision */
304 Ed = 0x00400000, /* Excessive Deferral */
305 Td = 0x00800000, /* Transmit Deferred */
306 Crs = 0x01000000, /* Carrier Sense Lost */
307 Tfu = 0x02000000, /* Transmit FIFO Underrun */
308 Txa = 0x04000000, /* Transmit Abort */
311 enum { /* Receive cmdsts bits */
312 Irl = 0x00010000, /* In-Range Length Error */
313 Lbp = 0x00020000, /* Loopback Packet */
314 Fae = 0x00040000, /* Frame Alignment Error */
315 Crce = 0x00080000, /* CRC Error */
316 Ise = 0x00100000, /* Invalid Symbol Error */
317 Runt = 0x00200000, /* Runt Packet Received */
318 Long = 0x00400000, /* Too Long Packet Received */
319 DestMASK = 0x01800000, /* Destination Class */
321 Rxo = 0x02000000, /* Receive Overrun */
322 Rxa = 0x04000000, /* Receive Aborted */
325 enum { /* extsts bits */
326 EvtciMASK = 0x0000FFFF, /* VLAN Tag Control Information */
328 Vpkt = 0x00010000, /* VLAN Packet */
329 Ippkt = 0x00020000, /* IP Packet */
330 Iperr = 0x00040000, /* IP Checksum Error */
331 Tcppkt = 0x00080000, /* TCP Packet */
332 Tcperr = 0x00100000, /* TCP Checksum Error */
333 Udppkt = 0x00200000, /* UDP Packet */
334 Udperr = 0x00400000, /* UDP Checksum Error */
340 Rbsz = ROUNDUP(sizeof(Etherpkt)+8, 8),
344 typedef struct Ctlr Ctlr;
345 typedef struct Ctlr {
352 int eepromsz; /* address size in bits */
359 QLock alock; /* attach */
360 Lock ilock; /* init */
361 void* alloc; /* base of per-Ctlr allocated data */
365 Lock rdlock; /* receive */
372 Lock tlock; /* transmit */
392 #define csr32r(c, r) (*((c)->nic+((r)/4)))
393 #define csr32w(c, r, v) (*((c)->nic+((r)/4)) = (v))
395 static Ctlr* dp83820ctlrhead;
396 static Ctlr* dp83820ctlrtail;
398 static Lock dp83820rblock; /* free receive Blocks */
399 static Block* dp83820rbpool;
401 static char* dp83820mibs[Nmibd] = {
416 mdior(Ctlr* ctlr, int n)
418 int data, i, mear, r;
420 mear = csr32r(ctlr, Mear);
421 r = ~(Mdc|Mddir) & mear;
423 for(i = n-1; i >= 0; i--){
424 if(csr32r(ctlr, Mear) & Mdio)
426 csr32w(ctlr, Mear, Mdc|r);
427 csr32w(ctlr, Mear, r);
429 csr32w(ctlr, Mear, mear);
435 mdiow(Ctlr* ctlr, int bits, int n)
439 mear = csr32r(ctlr, Mear);
440 r = Mddir|(~Mdc & mear);
441 for(i = n-1; i >= 0; i--){
446 csr32w(ctlr, Mear, r);
447 csr32w(ctlr, Mear, Mdc|r);
449 csr32w(ctlr, Mear, mear);
453 dp83820miimir(Mii* mii, int pa, int ra)
461 * MII Management Interface Read.
467 mdiow(ctlr, 0xFFFFFFFF, 32);
468 mdiow(ctlr, 0x1800|(pa<<5)|ra, 14);
469 data = mdior(ctlr, 18);
474 return data & 0xFFFF;
478 dp83820miimiw(Mii* mii, int pa, int ra, int data)
485 * MII Management Interface Write.
488 * ST+OP+PA+RA+LT + 16 data bits;
491 mdiow(ctlr, 0xFFFFFFFF, 32);
493 data |= (0x05<<(5+5+2+16))|(pa<<(5+2+16))|(ra<<(2+16))|(0x02<<16);
494 mdiow(ctlr, data, 32);
500 dp83820rballoc(Desc* desc)
505 ilock(&dp83820rblock);
506 if((bp = dp83820rbpool) == nil){
507 iunlock(&dp83820rblock);
512 dp83820rbpool = bp->next;
514 _xinc(&bp->ref); /* prevent bp from being freed */
515 iunlock(&dp83820rblock);
517 desc->bufptr = PCIWADDR(bp->rp);
522 bp->rp = bp->lim - Rbsz;
527 desc->cmdsts = Intr|Rbsz;
533 dp83820rbfree(Block *bp)
535 bp->rp = bp->lim - Rbsz;
538 ilock(&dp83820rblock);
539 bp->next = dp83820rbpool;
541 iunlock(&dp83820rblock);
545 dp83820halt(Ctlr* ctlr)
550 csr32w(ctlr, Imr, 0);
551 csr32w(ctlr, Ier, 0);
552 csr32w(ctlr, Cr, Rxd|Txd);
553 for(timeo = 0; timeo < 1000; timeo++){
554 if(!(csr32r(ctlr, Cr) & (Rxe|Txe)))
558 csr32w(ctlr, Mibc, Frz);
559 iunlock(&ctlr->ilock);
562 for(i = 0; i < ctlr->nrd; i++){
563 if(ctlr->rd[i].bp == nil)
565 freeb(ctlr->rd[i].bp);
566 ctlr->rd[i].bp = nil;
570 for(i = 0; i < ctlr->ntd; i++){
571 if(ctlr->td[i].bp == nil)
573 freeb(ctlr->td[i].bp);
574 ctlr->td[i].bp = nil;
580 dp83820cfg(Ctlr* ctlr)
585 * Don't know how to deal with a TBI yet.
591 * The polarity of these bits is at the mercy
592 * of the board designer.
593 * The correct answer for all speed and duplex questions
594 * should be to query the phy.
596 cfg = csr32r(ctlr, Cfg);
599 ctlr->txcfg |= Csi|Hbi;
600 iprint("83820: full duplex, ");
603 ctlr->rxcfg &= ~Rxfd;
604 ctlr->txcfg &= ~(Csi|Hbi);
605 iprint("83820: half duplex, ");
607 csr32w(ctlr, Rxcfg, ctlr->rxcfg);
608 csr32w(ctlr, Txcfg, ctlr->txcfg);
610 switch(cfg & (Spdsts1000|Spdsts100)){
611 case Spdsts1000: /* 100Mbps */
612 default: /* 10Mbps */
613 ctlr->cfg &= ~Mode1000;
614 if((cfg & (Spdsts1000|Spdsts100)) == Spdsts1000)
619 case Spdsts100: /* 1Gbps */
620 ctlr->cfg |= Mode1000;
624 csr32w(ctlr, Cfg, ctlr->cfg);
628 dp83820init(Ether* edev)
642 alloc = (uchar*)ROUNDUP((ulong)ctlr->alloc, 8);
643 ctlr->rd = (Desc*)alloc;
644 alloc += ctlr->nrd*sizeof(Desc);
645 memset(ctlr->rd, 0, ctlr->nrd*sizeof(Desc));
647 for(i = 0; i < ctlr->nrd; i++){
649 desc->link = PCIWADDR(&ctlr->rd[NEXT(i, ctlr->nrd)]);
650 if(dp83820rballoc(desc) == nil)
653 csr32w(ctlr, Rxdphi, 0);
654 csr32w(ctlr, Rxdp, PCIWADDR(ctlr->rd));
656 for(i = 0; i < Eaddrlen; i += 2){
657 csr32w(ctlr, Rfcr, i);
658 csr32w(ctlr, Rfdr, (edev->ea[i+1]<<8)|edev->ea[i]);
660 csr32w(ctlr, Rfcr, Rfen|Aab|Aam|Apm);
662 ctlr->rxcfg = Stripcrc|(((2*(ETHERMINTU+4))/8)<<RxdrthSHFT);
663 ctlr->imr |= Rxorn|Rxidle|Rxearly|Rxdesc|Rxok;
668 ctlr->td = (Desc*)alloc;
669 memset(ctlr->td, 0, ctlr->ntd*sizeof(Desc));
670 ctlr->tdh = ctlr->tdt = ctlr->ntq = 0;
671 for(i = 0; i < ctlr->ntd; i++){
673 desc->link = PCIWADDR(&ctlr->td[NEXT(i, ctlr->ntd)]);
675 csr32w(ctlr, Txdphi, 0);
676 csr32w(ctlr, Txdp, PCIWADDR(ctlr->td));
678 ctlr->txcfg = Atp|(((2*(ETHERMINTU+4))/32)<<FlthSHFT)|((4096/32)<<TxdrthSHFT);
679 ctlr->imr |= Txurn|Txidle|Txdesc|Txok;
685 csr32w(ctlr, Mibc, Aclr);
688 csr32w(ctlr, Imr, ctlr->imr);
690 /* try coalescing adjacent interrupts; use hold-off interval of 100µs */
691 csr32w(ctlr, Ihr, Ihctl|(1<<IhSHFT));
693 csr32w(ctlr, Ier, Ien);
694 csr32w(ctlr, Cr, Rxe|Txe);
696 iunlock(&ctlr->ilock);
700 dp83820attach(Ether* edev)
707 if(ctlr->alloc != nil){
708 qunlock(&ctlr->alock);
713 if(ctlr->mii != nil){
717 if(ctlr->alloc != nil){
721 qunlock(&ctlr->alock);
725 if(!(ctlr->cfg & Tbien)){
726 if((ctlr->mii = malloc(sizeof(Mii))) == nil)
728 ctlr->mii->ctlr = ctlr;
729 ctlr->mii->mir = dp83820miimir;
730 ctlr->mii->miw = dp83820miimiw;
731 if(mii(ctlr->mii, ~0) == 0)
733 ctlr->cfg |= Dupstsien|Lnkstsien|Spdstsien;
740 ctlr->alloc = mallocz((ctlr->nrd+ctlr->ntd)*sizeof(Desc) + 7, 0);
741 if(ctlr->alloc == nil)
744 for(ctlr->nrb = 0; ctlr->nrb < Nrb; ctlr->nrb++){
745 if((bp = allocb(Rbsz)) == nil)
747 bp->free = dp83820rbfree;
753 qunlock(&ctlr->alock);
758 dp83820transmit(Ether* edev)
770 for(x = ctlr->tdh; ctlr->ntq; x = NEXT(x, ctlr->ntd)){
772 if((cmdsts = desc->cmdsts) & Own)
800 while(ctlr->ntq < (ctlr->ntd-1)){
801 if((bp = qget(edev->oq)) == nil)
805 desc->bufptr = PCIWADDR(bp->rp);
809 desc->cmdsts = Own|Intr|BLEN(bp);
811 x = NEXT(x, ctlr->ntd);
815 r = csr32r(ctlr, Cr);
816 csr32w(ctlr, Cr, Txe|r);
819 iunlock(&ctlr->tlock);
823 dp83820interrupt(Ureg*, void* arg)
829 int cmdsts, i, isr, r, x;
834 for(isr = csr32r(ctlr, Isr); isr & ctlr->imr; isr = csr32r(ctlr, Isr)){
835 if(isr & (Rxorn|Rxidle|Rxearly|Rxerr|Rxdesc|Rxok)){
838 while((cmdsts = desc->cmdsts) & Own){
839 if((cmdsts & Ok) && desc->bp != nil){
842 bp->wp += cmdsts & SizeMASK;
843 etheriq(edev, bp, 1);
845 else if(0 && !(cmdsts & Ok)){
846 iprint("dp83820: rx %8.8uX:", cmdsts);
848 for(i = 0; i < 20; i++)
849 iprint(" %2.2uX", bp->rp[i]);
852 dp83820rballoc(desc);
854 x = NEXT(x, ctlr->nrd);
860 r = csr32r(ctlr, Cr);
861 csr32w(ctlr, Cr, Rxe|r);
865 isr &= ~(Rxorn|Rxidle|Rxearly|Rxerr|Rxdesc|Rxok);
869 x = (ctlr->txcfg & TxdrthMASK)>>TxdrthSHFT;
870 r = (ctlr->txcfg & FlthMASK)>>FlthSHFT;
871 if(x < ((TxdrthMASK)>>TxdrthSHFT)
872 && x < (2048/32 - r)){
873 ctlr->txcfg &= ~TxdrthMASK;
875 ctlr->txcfg |= x<<TxdrthSHFT;
876 csr32w(ctlr, Txcfg, ctlr->txcfg);
880 if(isr & (Txurn|Txidle|Txdesc|Txok)){
881 dp83820transmit(edev);
882 isr &= ~(Txurn|Txidle|Txdesc|Txok);
886 for(i = 0; i < Nmibd; i++){
887 r = csr32r(ctlr, Mibd+(i*sizeof(int)));
888 ctlr->mibd[i] += r & 0xFFFF;
893 if((isr & Phy) && ctlr->mii != nil){
894 ctlr->mii->mir(ctlr->mii, 1, Bmsr);
895 print("phy: cfg %8.8uX bmsr %4.4uX\n",
897 ctlr->mii->mir(ctlr->mii, 1, Bmsr));
902 iprint("dp83820: isr %8.8uX\n", isr);
907 dp83820ifstat(Ether* edev, void* a, long n, ulong offset)
915 edev->crcs = ctlr->mibd[Mibd+(1*sizeof(int))];
916 edev->frames = ctlr->mibd[Mibd+(3*sizeof(int))];
917 edev->buffs = ctlr->mibd[Mibd+(5*sizeof(int))];
918 edev->overflows = ctlr->mibd[Mibd+(2*sizeof(int))];
923 p = smalloc(READSTR);
925 for(i = 0; i < Nmibd; i++){
926 r = csr32r(ctlr, Mibd+(i*sizeof(int)));
927 ctlr->mibd[i] += r & 0xFFFF;
928 if(ctlr->mibd[i] != 0 && dp83820mibs[i] != nil)
929 l += snprint(p+l, READSTR-l, "%s: %ud %ud\n",
930 dp83820mibs[i], ctlr->mibd[i], r);
932 l += snprint(p+l, READSTR-l, "rxidle %d\n", ctlr->rxidle);
933 l += snprint(p+l, READSTR-l, "ec %d\n", ctlr->ec);
934 l += snprint(p+l, READSTR-l, "owc %d\n", ctlr->owc);
935 l += snprint(p+l, READSTR-l, "ed %d\n", ctlr->ed);
936 l += snprint(p+l, READSTR-l, "crs %d\n", ctlr->crs);
937 l += snprint(p+l, READSTR-l, "tfu %d\n", ctlr->tfu);
938 l += snprint(p+l, READSTR-l, "txa %d\n", ctlr->txa);
940 l += snprint(p+l, READSTR-l, "rom:");
941 for(i = 0; i < 0x10; i++){
942 if(i && ((i & 0x07) == 0))
943 l += snprint(p+l, READSTR-l, "\n ");
944 l += snprint(p+l, READSTR-l, " %4.4uX", ctlr->eeprom[i]);
946 l += snprint(p+l, READSTR-l, "\n");
948 if(ctlr->mii != nil && ctlr->mii->curphy != nil){
949 l += snprint(p+l, READSTR-l, "phy:");
950 for(i = 0; i < NMiiPhyr; i++){
951 if(i && ((i & 0x07) == 0))
952 l += snprint(p+l, READSTR-l, "\n ");
953 r = miimir(ctlr->mii, i);
954 l += snprint(p+l, READSTR-l, " %4.4uX", r);
956 snprint(p+l, READSTR-l, "\n");
959 n = readstr(offset, a, n, p);
966 dp83820promiscuous(void* arg, int on)
971 /* multicast already on, don't need to do anything */
973 dp83820multicast(void*, uchar*, int)
978 dp83820detach(Ctlr* ctlr)
981 * Soft reset the controller.
983 csr32w(ctlr, Cr, Rst);
985 while(csr32r(ctlr, Cr) & Rst)
991 dp83820shutdown(Ether* ether)
993 print("dp83820shutdown\n");
994 dp83820detach(ether->ctlr);
998 atc93c46r(Ctlr* ctlr, int address)
1000 int data, i, mear, r, size;
1003 * Analog Technology, Inc. ATC93C46
1004 * or equivalent serial EEPROM.
1006 mear = csr32r(ctlr, Mear);
1007 mear &= ~(Eesel|Eeclk|Eedo|Eedi);
1011 csr32w(ctlr, Mear, r);
1013 for(i = 3-1; i >= 0; i--){
1018 csr32w(ctlr, Mear, r);
1019 csr32w(ctlr, Mear, Eeclk|r);
1021 csr32w(ctlr, Mear, r);
1026 * First time through must work out the EEPROM size.
1028 if((size = ctlr->eepromsz) == 0)
1031 for(size = size-1; size >= 0; size--){
1032 if(address & (1<<size))
1036 csr32w(ctlr, Mear, r);
1038 csr32w(ctlr, Mear, Eeclk|r);
1040 csr32w(ctlr, Mear, r);
1042 if(!(csr32r(ctlr, Mear) & Eedo))
1048 for(i = 16-1; i >= 0; i--){
1049 csr32w(ctlr, Mear, Eeclk|r);
1051 if(csr32r(ctlr, Mear) & Eedo)
1053 csr32w(ctlr, Mear, r);
1057 csr32w(ctlr, Mear, mear);
1059 if(ctlr->eepromsz == 0){
1060 ctlr->eepromsz = 8-size;
1061 ctlr->eeprom = malloc((1<<ctlr->eepromsz)*sizeof(ushort));
1069 dp83820reset(Ctlr* ctlr)
1075 * Soft reset the controller;
1076 * read the EEPROM to get the initial settings
1077 * of the Cfg and Gpior bits which should be cleared by
1080 dp83820detach(ctlr);
1083 if(ctlr->eeprom == nil) {
1084 print("dp83820reset: no eeprom\n");
1088 for(i = 0; i < 0x0E; i++){
1089 r = atc93c46r(ctlr, i);
1090 ctlr->eeprom[i] = r;
1096 print("dp83820reset: bad EEPROM checksum\n");
1101 csr32w(ctlr, Gpior, ctlr->eeprom[4]);
1104 r = csr32r(ctlr, Cfg);
1105 if(ctlr->eeprom[5] & 0x0001)
1107 if(ctlr->eeprom[5] & 0x0002)
1109 if((ctlr->eeprom[5] & 0x0004) && (r & Pci64det))
1111 if(ctlr->eeprom[5] & 0x0008)
1113 if(!(pcicfgr16(ctlr->pcidev, PciPCR) & 0x10))
1115 if(ctlr->eeprom[5] & 0x0020)
1117 if(ctlr->eeprom[5] & 0x0080)
1119 if(ctlr->eeprom[5] & 0x0200)
1120 cfg |= Tbien|Mode1000;
1122 * What about RO bits we might have destroyed with Rst?
1123 * What about Exd, Tmrtest, Extstsen, Pintctl?
1124 * Why does it think it has detected a 64-bit bus when
1128 // r = csr32r(ctlr, Cfg);
1129 // r &= ~(Mode1000|T64addren|Data64en|M64addren);
1130 // csr32w(ctlr, Cfg, r);
1131 // csr32w(ctlr, Cfg, 0x2000);
1133 ctlr->cfg = csr32r(ctlr, Cfg);
1134 print("cfg %8.8uX pcicfg %8.8uX\n", ctlr->cfg, pcicfgr32(ctlr->pcidev, PciPCR));
1135 ctlr->cfg &= ~(T64addren|Data64en|M64addren);
1136 csr32w(ctlr, Cfg, ctlr->cfg);
1137 csr32w(ctlr, Mibc, Aclr|Frz);
1150 while(p = pcimatch(p, 0, 0)){
1151 if(p->ccrb != Pcibcnet || p->ccru != Pciscether)
1154 switch((p->did<<16)|p->vid){
1157 case (0x0022<<16)|0x100B: /* DP83820 (Gig-NIC) */
1161 mem = vmap(p->mem[1].bar & ~0x0F, p->mem[1].size);
1163 print("DP83820: can't map %8.8luX\n", p->mem[1].bar);
1167 ctlr = malloc(sizeof(Ctlr));
1169 print("DP83820: can't allocate memory\n");
1172 ctlr->port = p->mem[1].bar & ~0x0F;
1174 ctlr->id = (p->did<<16)|p->vid;
1177 if(dp83820reset(ctlr)){
1183 if(dp83820ctlrhead != nil)
1184 dp83820ctlrtail->next = ctlr;
1186 dp83820ctlrhead = ctlr;
1187 dp83820ctlrtail = ctlr;
1192 dp83820pnp(Ether* edev)
1198 if(dp83820ctlrhead == nil)
1202 * Any adapter matches if no edev->port is supplied,
1203 * otherwise the ports must match.
1205 for(ctlr = dp83820ctlrhead; ctlr != nil; ctlr = ctlr->next){
1208 if(edev->port == 0 || edev->port == ctlr->port){
1217 edev->port = ctlr->port;
1218 edev->irq = ctlr->pcidev->intl;
1219 edev->tbdf = ctlr->pcidev->tbdf;
1223 * Check if the adapter's station address is to be overridden.
1224 * If not, read it from the EEPROM and set in ether->ea prior to
1225 * loading the station address in the hardware.
1227 memset(ea, 0, Eaddrlen);
1228 if(memcmp(ea, edev->ea, Eaddrlen) == 0)
1229 for(i = 0; i < Eaddrlen/2; i++){
1230 edev->ea[2*i] = ctlr->eeprom[0x0C-i];
1231 edev->ea[2*i+1] = ctlr->eeprom[0x0C-i]>>8;
1234 edev->attach = dp83820attach;
1235 edev->transmit = dp83820transmit;
1236 edev->interrupt = dp83820interrupt;
1237 edev->ifstat = dp83820ifstat;
1240 edev->promiscuous = dp83820promiscuous;
1241 edev->multicast = dp83820multicast;
1242 edev->shutdown = dp83820shutdown;
1248 etherdp83820link(void)
1250 addethercard("DP83820", dp83820pnp);